What is a Kidney Biopsy?
A kidney biopsy (renal biopsy) is a procedure to remove a small sample of kidney tissue using a thin needle. The sample is examined under a microscope to diagnose kidney diseases, determine the cause of unexplained kidney problems, or assess the severity of kidney damage. It is one of the most important diagnostic tools in nephrology.
When is a Kidney Biopsy Needed?
The Procedure
Preparation
Blood tests to check clotting. Stop blood thinners 5-7 days before. Fasting for 6-8 hours.
Positioning
Lie face down with a pillow under your abdomen. Local anesthetic is applied.
Ultrasound Guidance
Ultrasound is used to locate the kidney and guide the needle precisely.
Needle Insertion
A thin biopsy needle is inserted through the back into the kidney. You may feel pressure.
Sample Collection
2-3 small tissue cores are obtained. The needle is removed quickly.
Recovery
You must lie flat for 4-6 hours. Monitor for bleeding. Usually discharged same day.
Risks & Complications
Recovery
- • Lie flat for 4-6 hours after the procedure
- • No heavy lifting for 1 week
- • No strenuous exercise for 1-2 weeks
- • Mild soreness at the site is normal
- • Results available in 3-5 days
- • Avoid driving for 24 hours
Consult Dr. Rajesh Goel
Expert in kidney biopsy and diagnosis with 18+ years experience